His unhealthful diet consisted mainly of fast food and sugary drinks.
She knew she needed to make changes to her unhealthful lifestyle in order to improve her overall well-being.
Breaking free from unhealthful habits like smoking and excessive drinking can lead to a longer and healthier life.
Making unhealthful choices when it comes to food and exercise can have negative effects on your health.
Living in an unhealthful environment with poor air quality can contribute to respiratory problems.